Mechanism for opening sheets



R. EDWARDS.

MECHANISM FOR OPEPHNG SHEETS.

APPLICATION x'lLE D DEC. 8,1919.

Patented Man 22, m1

2 SI-HZETSSHEEZ I.

INVENTOH VQMM R. EDWARDS.

MECHANISM FOR OPENENG SHEETS.

APPUCATION F!LED DEC. 6, 19m.

=1 w m mmmed ELM. 32,

a a W a.

wiTNEssEs iii f i u1 ei-i l s ons Specifieation of Letters Patent.

Patented Mar. 232, i921.

ii'pplication filed December 22-, 1918. serial No. 343,416.

To all whom it may 002166370.

Be it known that l, Rosanali'oivnnos, residing at lilartins Ferry, inthe county of Belmont and State of Ohio, a. citizen of the UnitedStates, have invented or discovered certain new and useful Improvementsin Mechanism for Opening Sheets, of which improvements the following isa specification.

In the manufacture of sheets, it is the practice to reduce the sheetbars toa certain thickness or then two of such relatively thick sheetstogether and roll this pair to a smaller and then to form a pack bydoubling" the pair of sheets on mselres repeatedly, each doublingfollowed by a rolling operation until cle siieo is ob ined.

in opening these packs, a, sonar-ting the sheets, one from the other,some sheets will stick very tightly, and in such cases, it fist-hepresent practice for the opener place the sheets on the floor and puthis toot on the lowermostsheet, seize the upper most sheet with tongsand pull itloose. This operation is laborious and ditlicult and consumesconsiderable time.

The objectof the invention described herein to provide mechanic-allyoperated means adapted to grip the respective sheets and pull them indiverging directions. The invention is hereinafter more fully describedand claimed.

in the .cooinpanying drawings wart of this specification, Figure l isscctional elevation of my sheet arating mechanism and Fig. 2 is a sectioplan view, the plane of section inuicated by the line ll-ll, Fi 1.

In the practice of the invention two rolls, 1 and 2, are mounted insuitable bearings and st arranged inhousing 5,the bearing the upper rollbeing alljustahle. llntermediate the in s of these rolls are formedrecesses b adapted to serve as guides for the blocks"? suitable bearingsior the'gournale of small rolls 8. The bearings for these blocks andarrangement of :21 rolls 8 in thebloces are such that by ing the blocks'Wardly, sheets is oe the rel s S the rolls 1 will be frictionsilyengaged by the surt'aces of the rolls. The blocks are provided withstems 9 extending and , backward through the housing and suitable meansare provided whereby pressure may be exerted on these stems to shift theblocks 1' and the rolls carried thereby, so that the latter will becaused to bear upon the sheets 'WlliCll are then gripped by drivingrolls 1 and 2 and the rolls 8. A suitable construction for thus shiftingthe blocks 7 consists of central. heads 10 and oppositely arrangedstruts 11 having their inner ends bearing on opposite sides of theirheads and the outer end of one pair of the struts hearing against thestems 9 While the outer end of the other struts will bear againstadjustable abut-merits 13. These leads are provided with stems 14extending downward and connected to arms 15 a shaft 16 which can berotated to pull down the heads by a treadle 17.. In order to move theblocks and the rolls 8 away from the driving rolls, springs 18 areinterposed between these blocks and opposed faces of the housing, asshown in Fig. 2, the springs being preferably arranged around rods 19having one end connected to the blocks and the other end movable inopenings in the housing. In order to guide the sheets into the. bitesbetween the rolls 8 and the driving rolls, a. wedge block 20 is arrangedin front of the rolls as clearly shown in Fin. 1.

n operating this mechanism to open sheets, the opener will partially'open the sheets and then press them against the Wedge which will guidethe respective sheets into the bite between the driving rolls and therolls 8, then the operator places his foot upon the treadle pushingtherolls 8 toward the driving rolls and thereby gripping the respectivesheets which are then drawn between the respective pairs of rolls.

1 claim herein as my invention:

1. in a machine for opening-sheets, the combination of two driven rollsspaced a distance apart, two rolls arranged on the same side of verticalplane gassing throu h the axes of the driven rolls, movable in tne spacebetween the driven rolls, and means for moving the intermediate rollstoward the respective d "iven rolls.

In a machine for opening sheets, the combination 01"" a housing, tworolls mounted in suitably spaced hearings in said housing,- ineans tordriving said rolls, blocks movable in the housing intermediate thebearings for the driven rolls, rolls mounted in said blocks and meansfor shifting said blocks in the same direction. toward a plane passingthrough the axes of the driven rolls and thereby bring the roiis carriedby the block: into operative relation to the respecmwa driven mils.

In. a n'iachine for spacing shets, the;

COHki'JiflLltiOIl of :1 housing, two rolls i'ziimnted in suitably spacedhearings in said housing, means fur driving said rolls, blocks movablein the housing intermediate the bearings for the driven rolls, rollsmounted in said blocks,

the M001; into operative relation to the re;-

specaiive driven rolls and a V-shuped Mock arranged 0n the feed side ofthe mus In testimony whereof, I have hereunto set my hand.

. ROBERT EDVVAHDS.

